No, he didn't mention barrel whip. He didn't need to as all barrels in receivers with their recoil lug up front on the bottom of the receiver whip in the vertical axis. And that' amplified as the recoil axis is above the center of the butt pad and usually above it.
It's the barrel whip of the Remington 40X rimfire rifles that their "experts" thought they could tame. The system had two screws coming up at 45 degree angles to the barrel in the stock's fore end that was what Remington though could be tamed and be repeatable. It used a light bulb and a battery hooked up and each screw was adjusted to just barely contact the barrel. Then different clicks would be put on each screw and tested for accuracy. The theory was that with some amount of pressure on the barrel, it wouild shoot any lot of ammo very accurate.
That was a disaster because folks often sighted in and set those two screws to get small groups. Then after lunch and back on the bench, accuracy went sour again. And shooting in position was never as accurate as off the bench as different ones put different amounts of external pressure on the fore end. Whatever setting made decent groups from a bench were not good for position work.
Folks soon learned to go back to a totally free floating barrel as it would not have any pressure on it at any point regardless of the position it was shoulder in.
That mechanical device was invented by Al Freeland, a decent smallbore shooter in the '50's. He came up with a lot of good stuff, but this one was a disaster.
Winchester used to put a barrel band on their Model 52 target rifles' fore end to clamp it down with varying amounts of pressure. It was not used on their later versions of the 52 as it was proved to be an accuracy robber. Best things folks did with that barrel band was to remove it and hog out the fore end so the barrel free floated.
Anschutz has always totally free floated their match rifle barrels, as far as I know. They don't even epoxy bed the wood stocked ones.
US Navy Distinguished Marksman Badge 153
Former US Navy & Palma Rifle Team Member
NRA High Power Master & Long Range High Master
NRA Smallbore Prone Master
Last edited by Bart B.; May 10, 2013 at 08:07 PM.